The Chem-Tainer 125 Gallon Heavy Duty Horizontal Leg Tank (SKU TC2948LA) is a Natural White polyethylene horizontal leg tank built for moving liquid on a skid, trailer, or service truck. It measures 50 inches long, 28.75 inches wide, and 31.5 inches tall, with self-supporting molded legs that let the tank sit flat without a cradle. The wall is molded to a 1.9 specific gravity rating, which is what makes this a true chemical-haul tank rather than a water-only nurse tank. If you only need to move water, plan around 1,042 pounds for a full 125 gallons; the tank itself is rated to carry up to 1,981 pounds of contents, so the 1.9 SG headroom is real working capacity for heavier liquids.
Will this horizontal leg tank work for your job?
This is a horizontal tank designed to be mounted and hauled. The low, wide 28.75 x 50.0 inch footprint keeps the center of gravity down when the tank is partly full and the liquid is sloshing, which is the main reason haulers choose a leg tank over a vertical drum for transport. Confirm your skid or trailer deck can support the loaded weight at the heavier of your two figures: 1,042 pounds full of water, up to 1,981 pounds at the maximum rated contents weight. Review the technical drawing on this page for leg spacing and fitting locations before you build a mount, and use the Tank Sizing Calculator and Tank Sizing Guide to match capacity to your route and refill cycle.
Chemical compatibility
The resin is recorded as HDLPE (high-density linear polyethylene) but is unconfirmed in our data — confirm HDLPE versus XLPE (cross-linked) with us before putting any chemical in service, because the two resins behave differently against aggressive media. Note that the 1.9 specific gravity rating is a structural rating for the weight of the liquid, not a chemical-service rating; aggressive oxidizers and concentrated acids must be confirmed for both resin compatibility and ambient operating temperature before service. The compatibility below is drawn from the OEM chemical-resistance chart and is always concentration-specific and temperature-specific; verify your exact concentration and operating temperature before you commit.
The single most expensive mistake on a haul tank is matching the wrong gasket to the chemical. The pack data sorts into three hardware tiers. Standard PVC fittings with EPDM gaskets cover most salts and glycols: Aluminum Sulfate (50%), Calcium Chloride (40%), Ethylene Glycol (100%), Ferric Chloride (50%), Ferric Sulfate (60%), Ferrous Sulfate (20%), Magnesium Chloride (30%), Polyaluminum Chloride, Potassium Carbonate (50%), Potassium Hydroxide (saturated), Sodium Carbonate (30%), Sodium Thiosulfate (40%), and Ozonated Water (up to 10 PPM). The acetic acid, urea, and the HF acids step up to PP/PVC fittings — Acetic Acid (60%, EPDM) and Urea Solution (50%, EPDM) on EPDM, the HF acids on Viton.
Viton-gasket acids and oxidizers are where EPDM fails and gets expensive: Hydrochloric Acid (37%, PVC), Hydrogen Peroxide (50%, PVC), Phosphoric Acid (85%, PVC), Sulfuric Acid (98%, CPVC), Sodium Hypochlorite (under 16.5%, PVC), Hydrofluoric Acid (48%, PP/PVC), and Hydrofluosilicic Acid (26%, PP/PVC) all require Viton. The 316SS and Aflas outliers need stainless or specialty hardware: DEF (32.5%, 316SS, EPDM), Peracetic Acid (30%, 316SS, Aflas), Propylene Glycol (PP/316SS, EPDM), Zinc Orthophosphate (PP/316SS, EPDM), plus Sodium Bisulfate and Sodium Bisulfite (both PVC/PP, EPDM). Running a Viton-spec acid like sulfuric, phosphoric, or sodium hypochlorite on an EPDM gasket is the failure that ends careers and tanks both — match the gasket to the chemical, and see the full chemical compatibility resource for concentration and temperature limits.
The mistake to avoid
Do not size this tank by water weight if you are hauling something denser. At 1.9 SG, a liquid heavier than water reaches the tank's rated contents ceiling long before it reaches 125 gallons of volume — fill to the rated 1,981 pound limit, not to the brim. Pair that discipline with the right fitting and gasket combination from the tiers above, and confirm your resin (HDLPE vs XLPE) for the specific chemical you intend to run.
This tank ships LTL freight from the Chem-Tainer plant in Merced, CA, with freight quoted live to your ZIP. Listed before freight — get a freight quote to your ZIP with our Freight Cost Estimator, or call 866-418-1777 and we will quote it and confirm resin and fitting selection for your application before you order.
